Corn-planter.



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Acome PLANTER.

(Application med .nm s', 1902.)

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CORN PLANTER.

(Application med .nm 5. `1902.

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1:1 El I UNTTED` STATES p PATENT OFFICE.

EDWARD M. HEYLMAN, OF JANESVILLE, WISCONSIN, ASSIGNOR TO JANES- VILLE MACHINE COMPANY, OF JANESVILLE, l/VISCONSIN, A CORPORA- TION OF WISCONSIN.

CORN-PLANTER.

SPECIFICATION forming part of Letters Patent No. 713,217, dated November 11, 1902. Application iled .Tune 5,1902. Serial No. 110,383. (No model.)

T @ZZ whom/t may concern:

Be it known that I, EDWARD M. HEYLMAN, of the city of Janesville, in the countypof Rock and State of Wisconsin, have invented a certain Improved Clutch Particularly Designed for Use in Corn-Planters, of which the following is a specification.

The main object of this invention is to provide improved means for intermittently trans- 1o initting motion from the covering-wheels of a planter to the dropping mechanism thereof; but the utility of the clutch mechanism is not confined to corn-planters.

The invention is exemplified inthe structure hereinafter described, and itis defined Y in the appended claims.

In the drawings forming part of this specification, Figure 1 is a front elevation of' the clutch mechanism. Fig. 2 is a plan ofthe zo clutch. Fig. 3 is a side elevation; Fig. 4 is a detail of the throw-out arm, illustrating the action thereof.y Fig. 5 is a detail showing the releasable clutch member in broken section. Fig. 6 is a detail of the operative end of the Q5 throw-out arm. Fig. 7 is a perspective representation of the spring-actuated bolt of the throw-out arm. Fig. 8 is a plan of a fragdment of a planter, showing my clutch mechanism attached thereto. Fig. 9 is a detail in side elevation of the means employed to control the clutch while drilling corn.

The drill-shaft of a planter is shown at 1 and a check-row shaft at 2. A sprocket-wheel 4 is mounted loosely on a cylindrical bearing 3 5 iiXed to the square drill-shaft, and a ratchetwheel 3 is attached to or made integral with the sprocket-wheel 4. An arm 5 is fastened to the drill-shaft 1 adjacent to the ratchetwheel 3, and it has in its outer end a slidable 4o bolt 6, adapted to engage the sidewise-projecting teeth of the'ratchet-wheel 3. An incline 9 is formed on the head of arm 5 on the front side thereof, and a stop extension 10 projects laterally from the rear side of the head. Thebolt 6 is provided with a spring a bearing by means of which the bolt is disengagedY from the wheel. A throw-out arm 1l is pivoted to swing into the path of the releasable clutch member, and it has a springbolt 12, the operative end 13 of which is adapted to engage the extension 8 of bolt 6 and hold bolt 6 from engagement with the ratchetwheel. The throw-out a rmis pivoted on a bolt extending through a bracket secured to cross-bar 15 of the front frame of the planter in this particular instance;V but this particular mode of providing a pivot is not essential. The upper end of the throw-out arm is beveled on the side adjacent to the'releasable clutch member, and the incline surface formed by the bevel lies in the path of exten- 'sion 8 of bolt 6 when the bolt is in engagement with the ratchet-Wheel andthe throwout arm is in position to release the clutch.

In Figs. 1 and 3 a throw-out arm is shown in position to release the clutch. Bolt 6 is held out of contact with the ratchet-wheel by bolt 12, and the extension 10 of arm 5 rests against the upper end of the throwout arm, restraining the releasable clutch member from rotating with the wheel. The

Vspring 22 (shown in Fig. 5) tends to force bolt 6 into engagement with the wheel; but the spring 23 of bolt 12 (shown in Fig. 6) is much stronger than spring 22, and it acts in a direction opposite thereto. When it is desired to .permit the releasable clutch member to engage the wheel, the throw-out arm is rocked outward on its pivot, carrying the end 13 of bolt 12 clear of extension 8 of bolt 6 and swinging the upper end 14 of the throw-out arm from under the lateral extension 10 of clutch-arm 5. As Ysoon as this is done the bolt 6 at onceengages the ratchet-wheel, which is continuouslyrotating, and the Varm 5and shaft 1 partake'of the motion ofthe wheel.. Ordinarily the shaft 1 is given but one rotation between stops, and the throwout arm is swung back intoV the position shown in Figs. 1 and 2 as soon as the shiftable clutch member moves out ofthe way. Then as the shaft nears the completion of its rotation the incline 14 strikes the extension S on bolt 6, forcing it sidewise and yaway from the wheel, the incline 9 strikes end 13 of bolt l2, forcing the operative end of the IOO bolt into its housing, and as the rotation is completed the bolt 12 rides past incline 9 and snaps bolt 6 from contact with the wheel immediately preceding the impingement of stop extension 10 against the upper end of the throw-out arm.

The throw-out arm 11 has a rearward and downward extension 11, through which the arm is actuated, and it also has an extension 11", adapted to engage a cross-bar of the planter-frame or other relatively fixed bearing and forma stop. A finger 17 is fastened onto a check-row shaft 2 beneath extension 1l of the throw-out arm, and when the checkrow shaft is rocked backward, as shown in Fig. 4, the linger 17 lifts upward on extension 11 and carries the throw-out arm out of interference with the clutch. A spring 19 tends to hold the throw-out arm in position to separate the clutch members, and a spring 20 connects with a lug 18 on the rock-shaft and returns the rock-shaft to its normal position after each rearward throw.

To provide against the remote possibility of bolt 12 failing to disengage bolt 6 from the ratchet-wheel, the contact-surfaces of extension 10 and the upper end 14 of the throwout arm are inclined with relation to a radius of the wheel to an extent snffcient to enable the clutch-arm to force the throw-out arm out of the path of the clutch-arm, and thereby avoid breakage of the engaging parts. (See Fig. 3.) In furtherance of this special provision the engaging end 13 of bolt 12 is beveled to conform to the bevel of the upper end 14 of the throw-out arm, as shown in Fig. 7. The incline 9 is cut away some distance below the bolt extension 8, and this enables the nose 13 of bolt 12 to shoot into the recess in advance of the extension 8 and eectually preclude possibility of the shaft completing its rotation before the bolt 6 is released from the wheel so long as the bolt does not become clogged.

The cross-bars of the front frame of a planter are shown at 15 and 16. A side bar of the rear frame of a planter is shown at 2G, and such bar connects pivotally at its forward end with a bridge-bracket 25. A crossshaft of the rear planter-frame is shown at 27 in Figs. 8 and 9. An arm 2S is swung loosely on lthe cross-shaft, and a rod 21 connects with the extension 11L and extends through bealings in arm 28. A spring 29 encircles rod 21 inside arm 28, and a pin 30 is adapted to engage either of a pair of holes in the rod. (See Fig. 8, where the pin is shown occupying one hole and the other hole is designated by reference-numeral 31.)

The rod 21 is used to control the clutch while drilling corn, the purpose being to leave the clutch members in gear While crossing the field and to separate them preparatory to turning around at the ends of the field. When the pin 30 is placed in hole 3l, the arm 28, the rod 2l, and the spring 29 constitute a hitch, which pulls yieldingly against extension 11 of the throw-out arm and holds the throw-out arm out of interference with the clutch when the front planter-frame is lowered. In raising the front planter-frame the distance between shaft 27 and the hitch end of the throwout arm is shortened, and by the time the front frame is entirely raised the throw-out arm is permitted to swing into an operative position and separate the clutch members. When the pin is removed from hole 3l, the rod is free to slide in arm 28, and the planter may then be used as a check-row machine.

In Fig. 8 the chain that drives the clutchwheel is shown at 24, and this chain is intended to receive motion from the axle-shaft of the planter in the customary manner.

I claim- 1. In a clutch, the combination of a continuouslyrotatable clutch-wheel, a releasable clutch member adapted to engage the clutchwheel, a throw-out for the releasableclutch member, and a spring in the operative end of the throw-out to hold the clutch disengaged.

2. In a clutch, the combination of a clutch- Wheel, a releasable clutch member held normally in engagement with the clutch-wheel by means of a spring, a throw-out for the releasableclutch member and a spring in the throw-out stronger than the spring in the releasable member and acting in opposition thereto.

3. In a clutch, the combination of a shaft, a clutch-wheel j ournaled loosely on the shaft, an arm fastened onto the shaft, a spring-actuated bolt in the arm adapted to engage the clutch-wheel, a throw-out to force the bolt from the Wheel and a spring in the throw-out to overpower the spring of the bolt and hold the clutch disengaged.

4. In a clutch, the combination of a shaft, a clutch-wheel j ournaled loosely on the shaft, an arm fastened onto the shaft, a spring-actuated bolt in the shaft-arm adapted to engage the wheel, an oscillatory throw-out arm, a bolt in the throw-out arm acting in opposition to the bolt of the shaft-arm, and a spring for the throw-out bolt stronger than the spring of the shaft-arm bolt and acting in a contrary direction.

5. In a clutch, the combination of a shaft, a clutch-wheel j ournaled loosely on the shaft, an arm fastened onto the shaft and adapted to en gage the clutch-Wheel, an oscillatory throwout arm having an incline to give initial separating motion to the connection between the shaft-arm and the Wheel, and a spring in the throw-out arm to complete the separation.

6. In a clutch, the combination of a shaft, a clutch-Wheel journaled loosely on the shaft, an arm fastened to the shaft, a bolt in the shaft-arm tending to engage the Wheel, a throw-out arm, a bolt in the throw-out arm to overcome the tendency of the bolt of the shaft-arm to engage the wheel, an incline on the shaft-arm to engage the bolt of the throwout arm, an incline on the throw-out arm to engage the bolt of the shaft-arm, and a stop IOO IIO

IZO

extension on the shaft-arm to strike the throwout arm when the clutch members are separated. Y

7. In a clutch for planters, the combination of a drill-shaft, a clutch-wheel journaled on the drill-shaft, a releasable clutch member fastened onto the drill-shaft, a throw-out arm for the clutch, and a yielding hitch between the throw-ont arm and the rear frame of the planter, whereby the throw-out arm is held out of interference with the clutch when the front frame is lowered, in drilling.

8. In a clutch for planters, the combination of a shaft, a clutch-wheel journaled on the shaft and provided with laterally-extending ratchet-teeth, an arm fastened to the shaft, a bolt in the arm adapted to engage the ratchetteeth of the clutch-wheel, a spring pressing EDWARD M. HEYLMAN.

Witnesses:

F. H. FARNswoRTH, T. F. KELTY. 

